//#include "add.h"
//#include "sub.h"
#include <stdio.h>

int main()
{
  int x = 10, y = 20;
  //int ret1 = my_add(x, y);
  //int ret2 = my_sub(x, y);
  printf("r1:%d\nr2:%d\n", x, y);
  return 0;
}
